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MEDIUM severity

Liferay Portal has Inefficient Regular ExpressionGHSA-chrc-q6v3-jfv8

MEDIUM

GHSA-chrc-q6v3-jfv8 is a medium-severity (CVSS 6.5) CWE-1333 vulnerability in com.liferay.portal:release.portal.bom. A fix is available for com.liferay.portal:release.portal.bom — see the affected versions and patch details below.

Also known asBIT-liferay-2023-33950CVE-2023-33950
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-chrc-q6v3-jfv8.

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs60th percentile — riskier than 60% of all scored CVEsHighest risk
0.10%0.54%0.98%1.42%0.6%0.9%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕com.liferay.portal:release.portal.bom

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Pattern Redirects in Liferay Portal 7.4.3.48 through 7.4.3.76, and Liferay DXP 7.4 update 48 through 76 allows regular expressions that are vulnerable to ReDoS attacks to be used as patterns, which allows remote attackers to consume an excessive amount of server resources via crafted request URLs.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavencom.liferay.portal:release.portal.bom≥ 7.4.3.48&&< 7.4.3.777.4.3.77com.liferay.portal:release.portal.bom:7.4.3.77

Affected Products

2 products · 3 configurations
Application
digital experience platformliferay
1 version
7.4
Application
liferay portalliferay
≥ 7.4.3.48 && ≤ 7.4.3.76
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.liferay.portal:release.portal.bom, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update com.liferay.portal:release.portal.bom to 7.4.3.77 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-chrc-q6v3-jfv8 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Pattern Redirects in Liferay Portal 7.4.3.48 through 7.4.3.76, and Liferay DXP 7.4 update 48 through 76 allows regular expressions that are vulnerable to ReDoS attacks to be used as patterns, which allows remote attackers to consume an excessive amount of server resources via crafted request URLs.
O3 Security · Impact-Aware SCA

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Liferay Portal has Inefficient Regular Expression